CAJ | 학술논문

特征线法是目前求解反应堆中子输运方程的主要计算方法之一。本文开发了基于OpenM P的中子输运方程特征线法并行计算程序，以提高特征线法的计算效率。OpenM P是共享存储体系结构上的一个并行编程模型，采用Fork‐Join并行执行方式，适合于SM P共享内存多处理系统和多核处理器体系结构。通过相关基准题测试验证，表明所开发的程序在有效增殖因数以及相对中子通量（归一化栅元功率）分布等参数上都能取得良好的精度，且使用OpenM P能取得良好的加速效果，使计算时间显著减少。
특정선법시목전구해반응퇴중자수운방정적주요계산방법지일。본문개발료기우OpenM P적중자수운방정특정선법병행계산정서，이제고특정선법적계산효솔。OpenM P시공향존저체계결구상적일개병행편정모형，채용Fork‐Join병행집행방식，괄합우SM P공향내존다처리계통화다핵처리기체계결구。통과상관기준제측시험증，표명소개발적정서재유효증식인수이급상대중자통량（귀일화책원공솔）분포등삼수상도능취득량호적정도，차사용OpenM P능취득량호적가속효과，사계산시간현저감소。
The method of characteristics (MOC) is one of the main methods for solving reactor neutron transport equation currently . A transport theory code based on the method of characteristics and an OpenM P parallel version of the method of characteris‐tics calculation code were developed .OpenMP is a parallel programming model with shared memory architectures ,using Fork‐Join parallel execution mode ,w hich is suitable for SM P shared memory multi‐processor systems and multi‐core processors architecture . The code was verified and validated by different benchmarks . The numerical results demonstrate that the code can give excellent accuracy for both the neutron effective multiplication factor and relative neutron flux (normalized cell power ) distribution for neutron transport problem .The use of OpenMP can obtain good acceleration effect , making the calculation time significantly reduced .